Befunge

Squares (1)

Chad Fowler

55+82+*99*88*77*66*55*44*33*22*11*>v
                                  .:
                                  ^_@

Outputs the squares from 1 to 10. Note that formatting is important. Explanation: push 5, push 5, pop/pop/add/push, push 8, push 2, pop/pop/add/push, pop/pop/multiply, push, etc... (until ">") go right, go down, ":" means duplicate of stack, compare to 0--if 0 go right, otherwise left, go up ("^"), pop and print as integer (continue up), go left, go down (looping until "@" on nonzero condition, which means "end")

Squares (2)

Chad Fowler

a987654321>v
          .:
          *v
          :v
          ^_@

Outputs the squares from 1 to 10. . Refactored :-)